Marathon E621A 20 HP, 1800 RPM three-phase general purpose motor with a NEMA 256T frame and Totally Enclosed Fan Cooled enclosure. Operates on 460V at 60 Hz with 1.15 service factor.

Marathon Severe Duty Motor, 4-Pole Squirrel Cage Inverter Rated, Special Features: Severe Duty Motors, 20 hp, 460 V, 24.2 A, 60 Hz, 3 ph, 1768 rpm, 1 Speed, IP55 Totally Enclosed Fan Cooled, 256T Frame, 1.626 in Dia Shaft, Reversible, Service Factor: 1.15, Ball Bearing, Rigid Mount, 40 deg C, Insulation Class: Class H, Cast Iron, 25.89 in L x 19.64 in W x 15.22 in H

Features:

• Meets or exceeds NEMA Premium efficiency
• 100% cast iron construction for rigidity and reduced vibration
• MAX GUARD class H insulation system
• Constant torque for inverter duty
• Sintered bronze breather with brass drain and breather
• Bearing caps and precision balanced to 0.08 in/s
• 1.15 service factor on sinewave and 1 service factor on IGBT power
• Internal and external epoxy painted

Specs: